Uthmaan narrated to us saying: ”A man came to (Imaam) Maalik (rahimahullaah) and asked him about an affair of the religion, so he said to him: ”The Messenger (sallal-laahu-alayhi-wasallam) said such and such.” So the man said: ”what is your view?” (Imaam) Maalik said to him: ”And let those who oppose the Messenger’s (Muhammad) commandment (i.e. his Sunnah legal ways, orders, acts of worship, statements, etc.) (among the sects) beware; lest some Fitnah (disbelief, trials, afflictions, earthquakes, killing, overpowered by a tyrant, etc.) befall them or a painful torment be inflicted on them.”[Soorah An-Noor: Ayah: 63] [Hilyatul Awliyaa: 6/326]